Valves



(No Model.) 2 Sheets-Sheet 1. J. H. BL'ESSING. MEGHANISM FOR OPERATINGVALVES.

Patented S e t. 15, 1885 m mm m MHQQ J mlnesses:

(No Model.) 2 Sheets-Sheet 2.

J. H. BLESSING.

MECHANISM FOR OPERATING VALVES. -No. 326,196. Patented Sept. 15, 18.85.

mil/mass as: 172mm fm":

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JAMES H. BLESSING, or ALBA Y, NEW YORK.

MECHANISM FOR OPERATING VALVES.

SPECIFICATION forming part of Letters Patent No. 326,196, datedSeptember 15, 1885.

Application filed June 30, 1885. (No model.)

To all whom, it may concern:

Be it known that I, JAMES H. BLESSING of the city and county of Albany,in the State of New York, have invented new and useful Improvements inMechanism for Operating Stop Valves and Cocks, of which the following isa specification.

In operating stop valves and cooks of a large size considerabledifficulty is encountered in directly moving the parts, and, asheretofore constructed, the gearing commonly used has been so arrangedas to greatly interfere with a proper access to the other parts of thevalve or cook.

The object of my improvements is to provide a compact and eflicientdevice for operating stop valves and cooks by which the power can beincreased to the degree required for operating said valves and cookswith perfect case. This object I attain by the mechanism illustrated inthe accompanying drawings, which, being herein referred to, form part ofthis specification, and in which Figure 1 is a side elevation of thecasing and screw stem of a stop -valve provided with my improvements,the balance of the device being shown in vertical section; Fig. 2, aplan view of the same, and Fig. 3 a 1ongitudinal section of astop-cockprovided with my improvements with the turn-plug shown in sideelevation.

As shown in Figs. 1 and 2, A is the valvecasing of a gate stop-valve ofordinary construction; B, the bonnet thereof, provided with astuffing-box, b, of the usual form, and O the screw-stem for operatingthe gates or valves.

As shown in Fig. 3, A is the casing for a stop cock, of a usual and wellknown construction; and G the turn plug for the same, having a stud orstem, 0, formed on its upper end; D, an internal gear wheel, secured tothe upper part of screw-stem G, as shown in Fig. l, or to the turn plug0, as shown in Fig. 3. Said gear-wheel may be provided with ahand-wheel, d, as shown in Figs. 1 and 2; or, when preferred, said handwheel may be omitted, as shown in Fig. 3.

E is a pinion fitted loosely on the upper part of the screw-stem O, asshown in Fig. 1, or upon the stem c,-as shown in Fig. 3; but in eithercase it is adapted to be rotated on said stems independently of thelatter, which only serves as a center on which said pinion may berotated.

The pinion E is retained in place by means FNITED. STATE PATENT OFF CE.

of a collar, 6, that is fixed on the stem on which the pinion revolves,

A hand :wheel, F, is secured to the pinion E, for the purpose ofimparting motion thereto.

G is an idler pinion fitted to rotate on a stud g, which is fixed in thedisk of the gear-wheel D. Said idler-pinion is arranged to constantlyengage in gear both with the gear-wheel D and the pinion E, so thatmotion may be transmitted from the pinion E to the gear-wheel D.

The operation of my improved device is as follows: Power is applied tothe hand.

Wheel F to rotate it in any required direction, and thereby a rotarymotion is im parted to the pinion E, by which the idlerpiniou G is setin motion to rotate the gear- Wheel D, and the part--either a screw-stemor a turn-plugto which it is attached.

WVhen this invention is used for operating gate valves of moderatelylarge size, the

hand-wheel (2 (shown in Figs. 1 and 2) may be used for moving the gateswhen an excessive pressure of the fluid has been removed from the gatesby reason of the valve being in a partially-open condition, and undersuch circumstances it is obvious that the valve can be more quicklymoved by means of the handwheel d than when operated by the train ofgearing.

When preferred, the hand-wheel F may be dispensed with if the hub of thepinion E is adapted to receive a wrench or other implement for turningsaid pinion.

The proportions of the gear wheel D to the pinion E may be increased ordiminished,

'as occasion requires, and thereby a correspending increase ordiminution of the gain in power may be effected to suit the work to beaccomplished.

I claim as my invention In a mechanism for operating stop valves orcocks, the combination, with a central stem or stud having an internalgear-wheel,"

D, fixed thereon, of apinion, E, provided with a. hand-wheel, F, or itsequivalent, and fitted to rotate on said centrabstud or stem, and 10 theidler-pinion G, all substantially as herein specified.

JAMES H. BLESSING. \Vitnesses: J 0H1? W. WHEELOCK,

WM. H. LoW.

